Exhibit 31.3

CERTIFICATION OF PERIODIC REPORT UNDER SECTION 302 OF

THE SARBANES-OXLEY ACT OF 2002

I, Ramin Sayar, certify that:

1.I have reviewed this Amendment No. 1 to the Annual Report on Form 10-K/A of Sumo Logic, Inc.; and

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.

Date: April 25, 2023	By:	/s/ Ramin Sayar
	Name:	Ramin Sayar
	Title:	Chief Executive Officer
		(Principal Executive Officer)